Agar a⁻¹ = 4 va b⁻¹ = 5 bo'lsa, ¹/a + ¹/b ning qiymatini toping.

  1. ⁹/₂₀
  2. ²⁰/₉
  3. 5
  4. 9

📝 Detailed explanation

a⁻¹ ifoda 1/a ga, b⁻¹ esa 1/b ga tengligini bilgan holda, so'ralgan yig'indi to'g'ridan-to'g'ri berilgan qiymatlarning yig'indisiga teng bo'ladi: 4 + 5 = 9.
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